{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x1a873c7d699f8ac354e91eab76f97f202a27f01654c18ed42d6212e1b4518355",
    "signature": "0xe46b6738dd27c59396eb1cb11dfc37f387908e5617693d046c658c54b96c295b1f04ea9f78da233afd14f8132e0dc1c6895bccf024c20696189d847322aec86e1b",
    "signer": "0x7547B44B7404C0bBCf4bDdc35b8FAa60d5473289",
    "userId": "779235560"
  }
}